AirHint found the following cheapest return flights from Islamabad (ISB) to London (LTN) in December 2025 (see full year).

Return flights

13 Dec - 11 Jan	Etihad Airways
11 Dec - 08 Jan	Fly Jinnah
10 Dec - 28 Jan	Fly Jinnah
04 Dec - 12 Jan	Fly Jinnah
08 Dec - 08 Jan	Fly Jinnah
02 Dec - 09 Dec	PIA
24 Dec - 31 Dec	Fly Jinnah
15 Dec - 09 Jan	AZAL
01 Dec - 08 Dec	PIA
22 Dec - 07 Jan	AZAL
08 Dec - 26 Jan	Fly Jinnah
09 Dec - 13 Jan	Fly Jinnah
07 Dec - 14 Dec	Fly Jinnah
16 Dec - 13 Jan	Fly Jinnah
19 Dec - 31 Dec	Fly Jinnah
10 Dec - 17 Dec	Fly Jinnah
03 Dec - 05 Dec	Fly Jinnah
08 Dec - 15 Dec	Fly Jinnah
04 Dec - 11 Dec	Fly Jinnah
05 Dec - 12 Dec	Fly Jinnah

Also check the deals for one-way flights from Islamabad to London in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Islamabad to London in December from $526

Return flights